Product History:

Power Specifications - Subwoofer Channel

RMS Power @ 4 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.

500 watts x 1 channels

RMS Power @ 2 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 2 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.

900 watts x 1 channels

RMS Power @ 1 ohm

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 1 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.

1800 watts x 1 channels

Power Specifications - Full Range Channels

Peak Power @ 4 ohms

This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

Peak Power @ 2 ohms

This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

Peak Power @ 1 ohm

This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

Bridged Peak/Max Power

Bridging refers to combining two channels on an amplifier to create one channel with double the voltage and an increased power output. A 2-channel amplifier will bridge down to 1-channel and a 4-channel amplifier can bridge to create 2-channels. An amplifier is most commonly bridged to drive a subwoofer.

Remember, once you bridge two channels down to one its final impedance will be 4 ohms unless otherwise specified. This rating lists the Peak/Max power created once an amplifier is bridged.

Power Specifications - Subwoofer Channel

Peak Power @ 4 ohm

This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

Peak Power @ 2 ohms

This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

Peak Power @ 1 ohm

This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

Amplifier Specifications

Amplifier Series

This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.

Zeus (Hifonics)

Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

D

Number of Channels

Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.

1 - Mono

Total RMS Power Output

Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

1800 watts

Maximum Input Gauge Size

This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.

4 AWG

Minimum Impedance Unbridged

The lowest impedance the amplifier will handle when it is not bridged.

1 ohms

THD at Rated RMS Power

The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.

0.10%

Speaker Level Inputs

Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.

No

Preamp Outputs

Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.

1 pair

Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Low-Pass (LP)

Low-Pass Crossover Frequency

The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.

95 dB

Bass Boost

The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.

0 - 10 dB

Bass/Gain Remote

If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.

Yes

Fan Cooled

A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).

No

Fuse Rating

The amperage and the number of fuse(s) an amp requires.

60A x 2

CEA-2006 Compliant

Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:

RMS Power

Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

No

Sonic Certified Amplifier

Sonic Certified amplifiers have been tested by the experts at Sonic Electronix to meet or exceed the wattage ratings provided by the manufacturer.
If this is marked as Yes, then you can trust the wattage ratings.
If marked as No, then we have tested the amplifier and it did not meet the advertised wattage ratings.
If marked as Not Tested, then the Sonic Electronix experts have not yet been able to test the amp.

Amp Bluetooth Connectivity

This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.

Hi-Res Audio Compatible

This feature refers to if the product is capable of Hi-Res Audio (HRA) playback.

More reviews

Just look at the photos of this amp and it's little brother, the ZRX1500.1D, paying attention to the fuses. This "1800 watt" amp has 2 x 60a fuses (120a) x 14.4v at 80% efficiency at 1-ohm = 1382 watts AT BEST. Funny that the "smaller" variant in this Zeus line, the ZRX1500.1D, which is supposedly less powerful than the ZRX1800.1D by 300 watts, has 2 x 70a fuses, 20a more fusing than the "bigger" 1800. The math for the 1500 is: 2 x 70a (140a) x 14.4v at 80% efficiency = 1612 watts, 230 watts MORE for less $$, possibly UNDER-RATED. I'm not saying the 1800.1 is not good or worth the price, I'm just saying that it doesn't make sense to buy this (new) instead of it's more-powerful and less-expensive "little" brother, the ZRX1500.1D.

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I got this thing hooked up to my 2 kicker 12" solos running 900w @ 2 ohms tuned with a multimeter and 40hz test tone and god blessss man!! This thing really makes those kickers hit hard. I know a lot of people bash Hifonics because they think that the amps don't really put out what they say they do, but I have nothing other than good things to say about this amp. Good job hifonics and thank you sonic for great, fast service. A+ company man!

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I originally purchased an mb quart amp which was backordered so i called and ended up with this one I have had hifonics subs in the past and they blew me away. So i figured why not they were both made hifonics. I am running two 15" jbl gt-5 subs and these hit very clear and very low im not pushing amp to its limits its at 2ohms but i can run it at full volume for thirty minutes and it wont even get warm this is a great amp especially for the price would buy again. I have had many rockford and kicker amps and this keeps right with them and even better on some of the features

26 of 31 found this helpful

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I installed this amp for a friend . She had a older Rockford T1 12 . I knew hifonics made good amps for a fair price . Overall I was happy with the install . One T1 12 In a tc scion sounds pretty good the amp was running at 2 ohms and had plenty of power for the sub . The only thing I wasn't happy with is how hot this amp got . I was concerned about clipping but it never did its men four months now and it's still making the sub flex ! So overall a great amp for the money . One more thing the way it lights up is pretty cool !

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I have 2 power acoustik crypt 12's wired to 1 ohm handling 1700 rms, and i had a power acoustik gothic 3000watt amp before this saying it did 1700rms @ 1ohm. This amp says 1800rms @ 1ohm but I'd say it does closer to high 1500. This amp hits harder and way more clean sounding bass. Easy to set up and does not get hot. It takes my 2 gauge wire with a squeeze and holds it in fine. Point is, if you're looking for a good quality amp for a good price this is it.

26 of 32 found this helpful

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what can i say i got 2 SWS12D2 wired in 2 ohms powered by this Amp and its great im in a 1977 chevy caprice and my trunk is on knock(2Blocks). amp does not get hot im gonna get 2 more SWS12D2 cause sonic says the Amp can handle 4

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Powering both of my kicker compr 12's on 1700 watts (tuned with voltmeter so it is exactly 1700 watts @1 ohm) and this thing is amazing! very clean sounding and has never once went into protection mode or anything!

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Man, this amp is a fool. I have 2 12" powerbass subs which is 375 rms each. I have it running 2 ohms, 900 rms, turned about 1/4 up on the amp. My entire car is shaking. I'm about to get to more powerbass 12" and a 4 sub box. Run all of them at 1 ohms which is 1800 rms, and all 4 sub are 1500 rms. If you are looking for some good subs for this amp, powerbass M-124 or M-124D is the way to go. My 300 sounds and looking good. Get this same hook up, you cant go wrong.

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I was originally looking for a brutus monoblock but could not find one that I wanted in stock any where so I decided to give the zeus a try. It is powering 212 Memphis subs at 2ohms and they hit hard. I can have them cranked with minimal airflow on the amp and it barely gets warm, decent size as well to be tucked away a bit more easily than the brutus. It is a bit power hungry however, running alongside a brx1200/4 my stock electrical system was not liking it, most stock setups don't usually handle more than 1200 or so rms anyway. Awesome product I don't know if you can get much better at this price.

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this amp is amazing, it was everything I wanted. it has a nice crisp clean sound, but thumps nice and hard with the heavier music. I listen to everything from orchestra, rap, and heavy metal this amp never over heats and never misses a beat. I drive about 45 minutes one way to work and it is awesome. I would advise anyone to purchase this amp for whatever your need.

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This amp puts out great power as expected, only problem, have to shut down system before i shut down my vehicle, or the speaker will thump hard.....trying to figure out why it does that.....the other amps do not do it.....

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I recently purchased this amp for my two alpine type-r and at first the amp was great, then I began having problems with the fuse holder on the amp itself. The amp would be playing and would cut out and when jiggling the fuses a bit it would play again. With that said I will be returning the amp.

11 of 14 found this helpful

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I have this amp hooked to two 12 kicker l3 in a sealed box and I set off car alarms BUT this amp is so strong your lights will dim unless u have a good battery so be prepared to upgrade your electrical system if its stock because this amp is a beast

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I bought two hifonics zues amps and I gotta say I love em. I had two RF p2s and the amps blew em apart lol... so I picked up 2 15 inch alpine type Rs and those amps power the hell out of em and they are barely turned up. I plan on buying four or six more zues amps to run a total of 6 or 8 15s in my navigator. Hifonics is a beyond great amp. They def won't let you down I love mine.... and they never overheat and I abuse the hell out of them

I picked this item because this site help me put in what type of speakers I have and matched me up to the right amp that I would need so, I wont have to worry about If I ordered the wrong equipment and it has a 60 day money back guarantee

Best Answer:I can say those subs are awesome for the price but I have mine on the Rockford amp. If it's a true 1800 watt amp then yes that's plenty of power for 2 since you only want 600 watts per speaker continuos. That brings you to 1200 to keep the amp from over heating. On another note that needs to be 1800 at 1 ohm

You can power 4, 8, 16, 32, or 64 subwoofers if you wanted. The QUANTITY of subwoofers is not a factor as to whether an amp can power them or not. The Final Impedance and Power Rating is . With that said, 3 CAN be powered, but your figures must be right. Ideally - and generally speaking - you want to look for three Dual-2ohm subwoofers, asking for ~300w each. Those subs MUST be wired in series/parallel. IF YOU WIRE THEM ANY OTHER WAY YOU WILL DESTROY THE SYSTEM!

Customer Testimonial

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

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